2004 STI Mods: TGV delete, helix 860cc injectors, Walboro fuel pump, Perrin FMIC, 3" turbo back exhaust with no cats, SMC meth inj, Tial BOV, DB SZ60, 6gun oil cooler kit, one step colder plugs, Perrin Big Maf, Topspeed Ecutek. Run was made at 28psi holding to redline, on pumpgas with meth injection, at the end of the run we were seeing maf voltages of 4.82v. SAE GRAPH UNCORRECTED GRAPH No here is where it gets interesting, this comparison is of the SZ60 vs a rotated GT30r kit. Both cars have identical mods, and both cars were run on pumpgas with meth injection at 28psi. You can see from the graph the stock placement SZ60 spools almost (and I mean almost) as fast but makes a ton more power up top. GT30r vs SZ60 OK so whats next.... humm lets see how it stacks agains a rotated GT35r. Again both cars have the same mods, and both were run at 28psi on pumpgas and meth. Here you can see that the SZ60 spools faster but doesn't make as much up top as the 35r, which can be expected from the smaller hotside (SZ60). Even though the spool up on the graphs don't look much different, I can tell you that the SZ60 spooled much quicker on the street than the 35r, and on boost response was also much quicker. GT35r vs SZ60 Enjoy, Doug